[ruby] merge if/else with if/elsif/else

No need to add extra lines to the output. Shorter is better :)

sheets/_ruby/control_flow

@@ -22,13 +22,7 @@ end
 end
 
 # Conditionals
-if 2 * 4 == 8
-  puts 'thank goodness'
-else
-  puts 'error between keyboard and chair'
-end
 
-# Add an extra condition
 if 1 == 0
   puts 'oh no'
 elsif 1 == 1